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', sprintf( /* translators: %s: WordPress version. */ __( 'Twenty Fifteen requires at least WordPress version 4.1. You are running version %s. Please upgrade and try again.', 'twentyfifteen' ), $GLOBALS['wp_version'] ) ); } /** * Prevent the Customizer from being loaded on WordPress versions prior to 4.1. * * @since Twenty Fifteen 1.0 */ function twentyfifteen_customize() { wp_die( sprintf( /* translators: %s: WordPress version. */ __( 'Twenty Fifteen requires at least WordPress version 4.1. You are running version %s. Please upgrade and try again.', 'twentyfifteen' ), $GLOBALS['wp_version'] ), '', array( 'back_link' => true, ) ); } add_action( 'load-customize.php', 'twentyfifteen_customize' ); /** * Prevent the Theme Preview from being loaded on WordPress versions prior to 4.1. * * @since Twenty Fifteen 1.0 */ function twentyfifteen_preview() { if ( isset( $_GET['preview'] ) ) { wp_die( sprintf( /* translators: %s: WordPress version. */ __( 'Twenty Fifteen requires at least WordPress version 4.1. You are running version %s. Please upgrade and try again.', 'twentyfifteen' ), $GLOBALS['wp_version'] ) ); } } add_action( 'template_redirect', 'twentyfifteen_preview' );